Fixes load-balancing jobs for virtual verify

Fixes load-balancing jobs for virtual verify

Issue where apex-virtual-master label node was being passed from verify
job to deploy/functest.  We allow multiple verify jobs to kick off on
virtual slaves, but then passing the host down to the deploy/functest
jobs causes the deploy/functest only run 1 job at a time on the same
node, rather than running 2 jobs at a time, one on each slave.

Change-Id: I1648eb6b84f17a2b08db4d161effe977c7952d63
Signed-off-by: Tim Rozet <trozet@redhat.com>